In the last paragraph, I wrote:

The code in the HTML tables is set to correctly view the right size of the swf files, but it still wants to come up as a 50x50 square.

So, the HTML cole is correctly set at the movie dimensions.

Also, it plays fine on my computer, I can see it perfectly normal.

I burned the folder to a cd (since my flash drive is lost), and my client viewed it on his Vista machine, and ...kerplunk...my movies have been transformed into thumbnails.

I just received an email. He tried it on his home system, XP & IE, and the same thing... thumbnail views.

I'm going to try burning another disk.